Bicycle



FIG. 1 is a front perspective view of a bicycle of my new design;

FIG. 2 is front view thereof

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a bicycle, as shown. 